Topic "WebDav authentication (Windows) not working"

Author Message


I set up a WebDav server on Windows using IIS 8.5.

I can access the authorized directories without problems using Windows Explorer or Cyberduck.

However, WinSCP seems unable to negotiate the 401 challenge. It does not even get to the password prompt, i get two error messages with the same text:
" Authentication failed.
Could not authenticate to server: ignored Negotiate challenge, ignored NTLM challenge"
This happens on port 80 and also port 443 (SSL).

See attached log file (level Debug1). (32.6 KB) [Download]

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Joined: 2002-12-10
Posts: 27083
Location: Prague, Czechia
Thanks for your report.

Is the real? I cannot resolve the host name.

Can you send me an email, so I can send you back a debug version of WinSCP to track the problem? Please include link back to this topic in your email. Also note in this topic that you have sent the email. Thanks.

You will find my address (if you log in) in my forum profile.
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Joined: 2017-07-07
Posts: 1
Location: Canada
martin wrote:
Thanks for your report.

Is the real? I cannot resolve the host name.

This is an internal web site, not publicly accessible. Problem is the same if used through VPN.

I sent you the requested email.


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